121334435432 has 96 divisors (see below), whose sum is σ = 266714856000. Its totient is φ = 51595165440.

The previous prime is 121334435429. The next prime is 121334435437. The reversal of 121334435432 is 234534433121.

It is a junction number, because it is equal to n+sod(n) for n = 121334435392 and 121334435401.

It is not an unprimeable number, because it can be changed into a prime (121334435437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36555869 + ... + 36559187.

It is an arithmetic number, because the mean of its divisors is an integer number (2778279750).

Almost surely, 2^121334435432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121334435432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133357428000).

121334435432 is an abundant number, since it is smaller than the sum of its proper divisors (145380420568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121334435432 is a wasteful number, since it uses less digits than its factorization.

121334435432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4028 counting only the distinct ones).

The product of its digits is 103680, while the sum is 35.

Adding to 121334435432 its reverse (234534433121), we get a palindrome (355868868553).

The spelling of 121334435432 in words is "one hundred twenty-one billion, three hundred thirty-four million, four hundred thirty-five thousand, four hundred thirty-two".